Home / 81,384.46-112,315.89-45,576.78

Finding the Fourth Proportional to 81,384.46, 112,315.89 and 45,576.78

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Solution

The fourth proportional to 81,384.46, 112,315.89 and 45,576.78 is: 62,898.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,384.46 : 112,315.89 = 45,576.78 : x
  2. Step 2: Convert to fraction form
    81,384.46/112,315.89 = 45,576.78/x
  3. Step 3: Cross multiply
    81,384.46x = 112,315.89 × 45,576.78
  4. Step 4: Simplify right side
    81,384.46x = 5,118,996,230.58
  5. Step 5: Solve for x
    x = 5,118,996,230.58/81,384.46
  6. Step 6: Final answer
    x = 62,898.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.